jakebilbrey:

My new web application, Call for Me, now supports the recently announced replacement to iChat, Messages. The new Messages beta for OS X combines iChat and iMessages together in one application.

On iOS to send an iMessage you use the URL scheme sms:Your-iMessage-Account. On this new Messages application on OS X it uses the URL scheme imessage:Your-iMessage-Account. Call for Me is now set up to detect what platform the visitor is on to give them the best option to contact you.